to each. For he wrote the first three concerning men, the following three concerning places, the third three concerning times, and the fourth three concerning sacred rites,—showing who should perform, where they should perform, when they should perform, what they should perform, with most subtle distinction. But because it was necessary to say—and that especially was expected—to whom they should perform sacred rites, he wrote concerning the gods themselves the last three books; and these five times three made fifteen. But they are in all, as we have said, sixteen. For he put also at the beginning of these one distinct book, speaking by way of introduction of all which follows; which being finished, he proceeded to subdivide the first three in that fivefold distribution which pertain to men, making the first concerning high priests, the second concerning augurs, the third concerning the fifteen men presiding over the sacred ceremonies. The second three he made